I have Plex set to always play subtitles and if I cast to my Xiaomi TV box they are always displayed but if I cast to plex-mpv-shim they will only display roughly 15% of the time. All my shows have subtitles muxed into them and are all either PGS or SRT streams. Running v. 1.11 on Kubuntu 23.10 amd MPV v.36.
I have Plex set to always play subtitles and if I cast to my Xiaomi TV box they are always displayed but if I cast to plex-mpv-shim they will only display roughly 15% of the time. All my shows have subtitles muxed into them and are all either PGS or SRT streams. Running v. 1.11 on Kubuntu 23.10 amd MPV v.36.